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Mr Spock

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Mr Spock last won the day on February 24

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About Mr Spock

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    Rivelin Valley / Stannington

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  1. It is f5. No idea what the p/v is, but it's pretty good. Moon is very sharp at x461 (3.3mm TOE). Jupiter doesn't stand high magnification, but here's my drawing through the 12": I've since found out the 7mm Nirvana actually measures 8mm... so this is x190.
  2. After my previous experience with OO I said I would never deal with them again. However, things might have changed since then. I could have afforded any 12" Dob I wanted, but I chose the StellaLyra and it's a winner. Optics are amazing, at least on the one I have. Here it is next to the shed where it's stored. I can't move it much farther due to a bad back.
  3. That's a lovely image. Nice detail 👍
  4. Forgot about that It's old age, the memory is going...
  5. Mine would be: Skywatcher ST80 OO OMC-140 Skywatcher 10" Newt Celestron C9.25 I tend to keep scopes a long time, so don't expect any sales anytime soon! Possibly the 8" f4 - I've had it six months and used it once... The Helios 120mm is well over 20 years old - a keeper as you would expect.
  6. I'd love to visit Iceland. My main interest would be photography though. Oh, and to see an active volcanic fissure. A nice walk to the top of Þorbjörn near Grindavik would be a lovely day out right now. - what a view! Fingers crossed the berms they constructed keep Grindavik safe though.
  7. Not so. I regularly use my 12" on the moon with a 3.3mm eyepiece. That's x461 - and it is very sharp. With the C9.25 I used an 8mm eyepiece for x294 on the moon maybe half a dozen times in ten years of owning it. It didn't have poor optics. The star test was perfect. With SCTs poor MTF is the problem, which is much worse on low contrast objects such as Jupiter's belts. This is why you hear many people say they prefer refractor views. It's also why SCTs are good at imaging as MTF can be corrected for in processing, assuming the optics are good quality.
  8. Very good on doubles - I split 0.7" with it. Mostly ok on the moon depending on seeing. I've had it up to x294 on a few occasions. On Jupiter I have consistently better views with my 100mm apos (current and previous). I could never really see any belt detail with it. It was always soft and 'mushy' - it doesn't have the MTF 'bite' for belt detail. It was also very prone to poor seeing conditions. It was stored in a cool place and still left to cool a couple of hours. Often I would just bring it straight back in as the views were too 'mushy' to do planetary.
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